cloud-fan commented on a change in pull request #30297:
URL: https://github.com/apache/spark/pull/30297#discussion_r520559042
##########
File path:
sql/core/src/test/scala/org/apache/spark/sql/DataFrameFunctionsSuite.scala
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@@ -3621,6 +3621,40 @@ class DataFrameFunctionsSuite extends QueryTest with
SharedSparkSession {
df.select(map(map_entries($"m"), lit(1))),
Row(Map(Seq(Row(1, "a")) -> 1)))
}
+
+ test("SPARK-33391: element_at ArrayIndexOutOfBoundsException") {
Review comment:
Let's not mix unit test and end-to-end test. Let's add UT in
`CollectionExpressionsSuite`(for ElementAt) and `StringExpressionsSuite` (for
Elt).
For end-to-end test, we can put them in `DataFrameSuite` for all the three
functions/operators.
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